<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, height=device-height, initial-scale=1, user-scalable=no">
  <meta name="description" content="API docs for the RSTransform.fromComponents constructor from the Class RSTransform class from the dart:ui library, for the Dart programming language.">
  <title>RSTransform.fromComponents constructor - RSTransform class - dart:ui library - Dart API</title>
  <!-- required because all the links are pseudo-absolute -->
  <base href="../..">

  <link href="https://fonts.googleapis.com/css?family=Source+Code+Pro:500,400i,400,300|Source+Sans+Pro:400,300,700" rel="stylesheet">
  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
  <link rel="stylesheet" href="static-assets/github.css">
  <link rel="stylesheet" href="static-assets/styles.css">
  <link rel="icon" href="static-assets/favicon.png">
  
</head>

<body>

<div id="overlay-under-drawer"></div>

<header id="title">
  <button id="sidenav-left-toggle" type="button">&nbsp;</button>
  <ol class="breadcrumbs gt-separated dark hidden-xs">
    <li><a href="index.html">manage_calendar_events</a></li>
    <li><a href="dart-ui/dart-ui-library.html">dart:ui</a></li>
    <li><a href="dart-ui/RSTransform-class.html">RSTransform</a></li>
    <li class="self-crumb">RSTransform.fromComponents factory constructor</li>
  </ol>
  <div class="self-name">RSTransform.fromComponents</div>
  <form class="search navbar-right" role="search">
    <input type="text" id="search-box" autocomplete="off" disabled class="form-control typeahead" placeholder="Loading search...">
  </form>
</header>

<main>

  <div id="dartdoc-sidebar-left" class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
    <header id="header-search-sidebar" class="hidden-l">
      <form class="search-sidebar" role="search">
        <input type="text" id="search-sidebar" autocomplete="off" disabled class="form-control typeahead" placeholder="Loading search...">
      </form>
    </header>
    
    <ol class="breadcrumbs gt-separated dark hidden-l" id="sidebar-nav">
      <li><a href="index.html">manage_calendar_events</a></li>
      <li><a href="dart-ui/dart-ui-library.html">dart:ui</a></li>
      <li><a href="dart-ui/RSTransform-class.html">RSTransform</a></li>
      <li class="self-crumb">RSTransform.fromComponents factory constructor</li>
    </ol>
    
    <h5>RSTransform class</h5>
    <ol>
      <li class="section-title"><a href="dart-ui/RSTransform-class.html#constructors">Constructors</a></li>
      <li><a href="dart-ui/RSTransform/RSTransform.html">RSTransform</a></li>
      <li><a href="dart-ui/RSTransform/RSTransform.fromComponents.html">fromComponents</a></li>
    
      <li class="section-title">
        <a href="dart-ui/RSTransform-class.html#instance-properties">Properties</a>
      </li>
      <li><a href="dart-ui/RSTransform/scos.html">scos</a></li>
      <li><a href="dart-ui/RSTransform/ssin.html">ssin</a></li>
      <li><a href="dart-ui/RSTransform/tx.html">tx</a></li>
      <li><a href="dart-ui/RSTransform/ty.html">ty</a></li>
      <li class="inherited"><a href="dart-core/Object/hashCode.html">hashCode</a></li>
      <li class="inherited"><a href="dart-core/Object/runtimeType.html">runtimeType</a></li>
    
      <li class="section-title inherited"><a href="dart-ui/RSTransform-class.html#instance-methods">Methods</a></li>
      <li class="inherited"><a href="dart-core/Object/noSuchMethod.html">noSuchMethod</a></li>
      <li class="inherited"><a href="dart-core/Object/toString.html">toString</a></li>
    
      <li class="section-title inherited"><a href="dart-ui/RSTransform-class.html#operators">Operators</a></li>
      <li class="inherited"><a href="dart-core/Object/operator_equals.html">operator ==</a></li>
    
    
    
    </ol>
  </div><!--/.sidebar-offcanvas-left-->

  <div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
      <div><h1><span class="kind-constructor">RSTransform.fromComponents</span> constructor</h1></div>

    <section class="multi-line-signature">
      
      <span class="name ">RSTransform.fromComponents</span>(<wbr>{<span class="parameter" id="fromComponents-param-rotation"><span class="type-annotation"><a href="dart-core/double-class.html">double</a></span> <span class="parameter-name">rotation</span>, </span> <span class="parameter" id="fromComponents-param-scale"><span class="type-annotation"><a href="dart-core/double-class.html">double</a></span> <span class="parameter-name">scale</span>, </span> <span class="parameter" id="fromComponents-param-anchorX"><span class="type-annotation"><a href="dart-core/double-class.html">double</a></span> <span class="parameter-name">anchorX</span>, </span> <span class="parameter" id="fromComponents-param-anchorY"><span class="type-annotation"><a href="dart-core/double-class.html">double</a></span> <span class="parameter-name">anchorY</span>, </span> <span class="parameter" id="fromComponents-param-translateX"><span class="type-annotation"><a href="dart-core/double-class.html">double</a></span> <span class="parameter-name">translateX</span>, </span> <span class="parameter" id="fromComponents-param-translateY"><span class="type-annotation"><a href="dart-core/double-class.html">double</a></span> <span class="parameter-name">translateY</span></span> })
    </section>

    <section class="desc markdown">
      <p>Creates an RSTransform from its individual components.</p>
<p>The <code>rotation</code> parameter gives the rotation in radians.</p>
<p>The <code>scale</code> parameter describes the uniform scale factor.</p>
<p>The <code>anchorX</code> and <code>anchorY</code> parameters give the coordinate of the point
around which to rotate.</p>
<p>The <code>translateX</code> and <code>translateY</code> parameters give the coordinate of the
offset by which to translate.</p>
<p>This constructor computes the arguments of the <a href="dart-ui/RSTransform/RSTransform.html">new RSTransform</a>
constructor and then defers to that constructor to actually create the
object. If many <a href="dart-ui/RSTransform-class.html">RSTransform</a> objects are being created and there is a way
to factor out the computations of the sine and cosine of the rotation
(which are computed each time this constructor is called) and reuse them
over multiple <a href="dart-ui/RSTransform-class.html">RSTransform</a> objects, it may be more efficient to directly
use the more direct <a href="dart-ui/RSTransform/RSTransform.html">new RSTransform</a> constructor instead.</p>
    </section>
    
    <section class="summary source-code" id="source">
      <h2><span>Implementation</span></h2>
      <pre class="language-dart"><code class="language-dart">factory RSTransform.fromComponents({
  double rotation,
  double scale,
  double anchorX,
  double anchorY,
  double translateX,
  double translateY
}) {
  final double scos = math.cos(rotation) * scale;
  final double ssin = math.sin(rotation) * scale;
  final double tx = translateX + -scos * anchorX + ssin * anchorY;
  final double ty = translateY + -ssin * anchorX - scos * anchorY;
  return RSTransform(scos, ssin, tx, ty);
}</code></pre>
    </section>

  </div> <!-- /.main-content -->

  <div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
  </div><!--/.sidebar-offcanvas-->

</main>

<footer>
  <span class="no-break">
    manage_calendar_events 1.0.1
  </span>

  
</footer>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="static-assets/typeahead.bundle.min.js"></script>
<script src="static-assets/highlight.pack.js"></script>
<script src="static-assets/URI.js"></script>
<script src="static-assets/script.js"></script>


</body>

</html>
